If you've ever had to go for a polysomnography, they have probably hooked your head up to a bunch of wires. These wires are there to measure brain activity while you are sleeping. The official term for what this test is is an EEG, or an electroencephalogram. The EEG will provide a recording of electrical activity in your brain while you are awake and sleeping. It involves having small electrodes placed around your head which are attached to your scalp using a paste. You may also be asked to breathe deeply or look into a flashlight at some point during the recording. This, also known as activation technique. The test can normally take up to two hours if that's the only thing that you're doing.
People normally get EEG that they struggle with electrical activity, like seizures. EEG's are also useful for determining what stage of sleep people are in. As part of the test, you may also be video recorded to help diagnose your condition. You will be asked to sign the consent form at the beginning of the test to allow for recording of your brain activity and interpretation of the results. Continue reading to learn more about a sleep EEG, who should get one, and what it is like.